how to Draw 3D bounidng box in unorgamized point cloud using 2D bounding box

mannem

Hi i have 2d bounding box in 2D image and have corresponding unorganized point cloud data. how can i draw 3D bounding box in point cloud by using 2D bounding box? any help would be appreciated. thanks, mannem

jakaskerl

Hi mannem
Very basic solution would be to extract 3 points from the 2D bounding box (in x y z coordinates) along with the farthest away point of the point cloud and a point that would define box orientation. Then draw a box and project it to 2D plane. This will however only give you boxes of the same orientation. If you want the boxes aligned with direction of the object, you need to use a separate NN to infer that.
Hope this helps,
Jaka